I used to work under Subversion/SVN and was instantly using nice feature called keyword substitution. Just putting in source files smth like:
/*
* $Author: ivanovpv $
* $Rev: 42 $
* $LastChangedDate: 2012-05-25 21:47:42 +0200 (Fri, 25 May 2012) $
*/
And each time Subversion was substituting keywords (Author, Rev, LastChangedDate) with actual ones.
Some time ago I was forced to move to Git and just wondering is there's something similar to Subversion's keyword substitution in Git?